You are reading a single comment by @BrickMan and its replies.
Click here to read the full conversation.
-
Authorities often go around just before a closed road bike race/ running race/charity event with people walking briskly and put down basically skateboard grip tape on them. Can last upto a year.
Alternatively mix cheap gloss paint with random sharp aggregate and paint it on when dry, always works for us with bike trails that have slippery wooden features (and stone sometimes).
BrickMan
You are right. It surely must be possible to make them non-slip. Some of them have tarmac on them